For a better orientation in the blurred panorama of contemporary architecture, it may be adequate to insist on some basic issues that continue to configure the armature of authentic architecture: matter, light, structure and emotion. These issues are essential to architecture as a poetic of construction and a technique of the inhabiting. The specific approach on which Miguel Guitart focuses is the filter understood as tension between geometry, structure, gaze and light, and whose aim is to activate the architectural space in a profound and reflective way. Filters of gaze and light may be found in many cultures and under many guises, but they are always designed for a whole array of functions and made to measure for each region and for each person.